<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>

        var a = true;
        var b = "hello";
        c='afas'
        var d = 34;
        alert(a)
        function fun(){
            alert("hello")
        }

    </script>


</body>
</html>
